Krysten Ritter was 18 in Someone Like You... when she played the character 'Model'.
That was over 23 years ago in 2001.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 42, and has starred in 25 movies in total, 24 of those since Someone Like You... was released.
In Someone Like You..., I think Krysten Ritter looks: